A Concho belt with X's for the conchos and O's for the butterflies is a modern version of a centuries old design. This X and O Concho Belt by Navajo Artist Daniel Martinez This design is also called "Hugs and Kisses".
Sterling Silver and turquoise.
Buckles ~ 2 3/4" BY 2 1/4"
9 Conchos( X's) ~ 1 1/8" by 1 1/8"
10 Butterflies( O's)~ 1 7/8" by 1 3/8"